Liquid stabilizer for soft vinyl chloride resins, soft vinyl chloride resin composition using said stabilizer and molded body formed from said composition

Abstract

There is provided a liquid stabilizer that can achieve a soft vinyl chloride resin composition having excellent blocking resistance and excellent transparency. A liquid stabilizer for a soft vinyl chloride resin according to the present invention includes: an organic acid zinc salt; an alkaline earth metal salt of an organic acid; and polypropylene glycol having a number-average molecular weight of 2,000 or more and/or ricinoleic acid.

The invention claimed is: 
     
       1. A liquid stabilizer for a vinyl chloride resin, comprising:
 an organic acid zinc salt; 
 an alkaline earth metal salt of an organic acid; and 
 ricinoleic acid, or ricinoleic acid and polypropylene glycol having a number-average molecular weight of 2,000 or more, 
 wherein the ricinoleic acid is not present as the organic acid forming the zinc salt or the alkaline earth metal salt. 
 
     
     
       2. The liquid stabilizer for a vinyl chloride resin according to  claim 1 , wherein the liquid stabilizer comprises two or more of the organic acid zinc salts. 
     
     
       3. The liquid stabilizer for a vinyl chloride resin according to  claim 1 , wherein the liquid stabilizer comprises two or more of the alkaline earth metal salts of the organic acid. 
     
     
       4. The liquid stabilizer for a vinyl chloride resin according to  claim 1 , wherein the organic acid is selected from oleic acid, octylic acid, and benzoic acid. 
     
     
       5. The liquid stabilizer for a vinyl chloride resin according to  claim 1 , wherein the alkaline earth metal is selected from calcium and barium. 
     
     
       6. A vinyl chloride resin composition, comprising, with respect to 100 parts by weight of a vinyl chloride resin:
 0.1 part by weight to 5 parts by weight of the liquid stabilizer of  claim 1 ; and 
 20 parts by weight to 100 parts by weight of a plasticizer. 
 
     
     
       7. The vinyl chloride resin composition according to  claim 6 , wherein the plasticizer is selected from an alkyl adipate, an epoxidized soybean oil, and a phthalate. 
     
     
       8. A formed article, which is formed from the vinyl chloride resin composition of  claim 6 . 
     
     
       9. The formed article according to  claim 8 , wherein the formed article comprises a film or a sheet. 
     
     
       10. The formed article according to  claim 9 , wherein the formed article is for use in food packaging. 
     
     
       11. The liquid stabilizer for a vinyl chloride resin according to  claim 2 , wherein the liquid stabilizer comprises two or more of the alkaline earth metal salts of the organic acid. 
     
     
       12. The liquid stabilizer for a vinyl chloride resin according to  claim 2 , wherein the organic acid is selected from oleic acid, octylic acid, and benzoic acid. 
     
     
       13. The liquid stabilizer for a vinyl chloride resin according to  claim 3 , wherein the organic acid is selected from oleic acid, octylic acid, and benzoic acid. 
     
     
       14. The liquid stabilizer for a vinyl chloride resin according to  claim 11 , wherein the organic acid is selected from oleic acid, octylic acid, and benzoic acid. 
     
     
       15. The liquid stabilizer for a vinyl chloride resin according to  claim 2 , wherein the alkaline earth metal is selected from calcium and barium. 
     
     
       16. The liquid stabilizer for a vinyl chloride resin according to  claim 3 , wherein the alkaline earth metal is selected from calcium and barium. 
     
     
       17. The liquid stabilizer for a vinyl chloride resin according to  claim 4 , wherein the alkaline earth metal is selected from calcium and barium. 
     
     
       18. The liquid stabilizer for a vinyl chloride resin according to  claim 14 , wherein the alkaline earth metal is selected from calcium and barium. 
     
     
       19. A vinyl chloride resin composition, comprising, with respect to 100 parts by weight of a vinyl chloride resin:
 0.1 part by weight to 5 parts by weight of the liquid stabilizer of  claim 18 ; and 
 20 parts by weight to 100 parts by weight of a plasticizer. 
 
     
     
       20. The liquid stabilizer for a vinyl chloride resin according to  claim 1 , wherein a content of the organic acid zinc salt in the liquid stabilizer is from 5 wt % to 40 wt % with respect to a total amount of the liquid stabilizer. 
     
     
       21. The liquid stabilizer for a vinyl chloride resin according to  claim 1 , wherein a content of the alkaline earth metal salt of the organic acid in the liquid stabilizer is from 5 wt % to 70 wt % with respect to a total amount of the liquid stabilizer. 
     
     
       22. The liquid stabilizer for a vinyl chloride resin according to  claim 1 , wherein a content of ricinoleic acid in the liquid stabilizer is from 3 wt % to 40 wt % with respect to a total amount of the liquid stabilizer.